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Full text of "ASTM D1835: Standard Specification for Liquefied Petroleum (LP) Gases"


By Authority Of 


Legally Binding Document 

By the Authority Vested By Part 5 of the United States Code § 552(a) and 
Part I of the Code of Regulations § 51 the attached document has been duly 
INCORPORATED BY REFERENCE and shall be considered legally 
binding upon all citizens and residents of the United States of America. 
HEED THIS NOTICE : Criminal penalties may apply for noncompliance. 

Document Name: aSTM D 1 835 : Standard Specification for Liquefied 

Petroleum (LP) Gases 

CFR Section(s): 

Standards Body: American Society for Testing and Materials 

Designation: D 1835 - 97 

An American National Standard 

Standard Specification for ^ ^ ' 
Liquefied Petroieum (LP) Ga§esT 

This standard is issued under the fixed designation ©■lMy;.theLnumfe the designation indicates the year of 

original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval A 
superscript ei)Sil6ni;e) indicates an editdnal change V'^'yf i f -- n }:'^ A,:.'';\o'' -o.. r - 

''Vn^ ill 

i'V ■■ 

V^ JjiOii 

1.1 This speBifi'cafton-GGVeirs th6se^tprdducts^^xs6mBionty^ 
refened fe as liqtifefiM petraleim ;u \^^ \^ •:: 

1.2^ This sp'ecificiatiGn- is apgliGaible to prodUGts-^intended for 
use as domestiG, Gommercial, industrialj^and'erigiaae fuels; -' ■ 
■^1.3' this speGifiGationis^fof uses in fomiiilating specifibatibns 
for required propeffiesbfliqil'esfied petroieuin gas6s"^ at the time! 
Of delivery m^bOM: ''^' f''^- ■'^"-^ ^^^ - ■ -■'■-> "" ' " ''■■'-; ' 

2/ Referenced Documehts ' V . ; , 

D 1265 Praetic^ for/§ampling .Lifluefij^^ (LP) 

v.:^Sases (Manual Me^ -^:. ^-ju; .^m.:;; rj ^ /:/ . 

V , D, 1 267r .Test , Method, for Gage. Vapor Pressure, gf iLique|iecl, 

.BetrQleum:(IJ>)'Ggses'^^^ . , ' 

D 1657 Test Method for Density or Relative Density of 

Light Hydroearbons by Pressure Thermohydrometer^ 
D 1837 Test Method for Volatility of Liquefied Petrolexim 

(LP) Gases^ 
^©^1838^' Test Method for Gopper Strip .Gbrfosiomby Liqjie- 
■ * 'fied,PeMeiim(LP) GaseS^^ ; '''-■^:' ; - ■ ' ' 
DZi58' lest Method foi* ReSi&ies^in liquefied Petrbleum 

I ; JD. 2 1 63v. te^. ^MeihQd ^jfor Anstlysi^^/^f ^iqi^efied pei^eum 
CLP) Gases and Propene ConGentratesr% Gas phi^^ 
D2420 Test Method for Hydrogen Sulfide in Liquefied 
Petroleum (LP) Gases^ (Lead Acetate Me^^ - 

D 2598 Practice 'fbi: tlabiila^ibn'^ 
erties of Liquefied Petroleum (LP) Gases from* Cbmposi- 

^^D 2784 Test, 1^ Sulfur in JJ[quefied-^P,etd 

Gases (Oxy-HydrogejiBurQer orLamp)^ ]^) . ;..;:; .. ,; 
-, D 37Q0; PmetiGe for Containing Hydroearhon Fluid Sainpies 
- f. Using a.FloatiQg.Piston^ylinder^ -r? >v. ■ / :ii(/ 

^ 23 ' "Other BoMnent:''^^^ ■[ ' -^ ^"."■'■■n^.^^ 7. ^ ^ ^'^^.n^.. 

^''bpxstaria^cisSo^'''^''^^ ''-'' ■" ' ■.■■;■'■■' '■^,'"\|';v;;,^-^;' 

3"lyp<es '%^' '\'^"' ..■/ .-,, ^'. v/V .',■; ",,'-^ '':",; 
"3.1' Four basic types of liquefiisd petfbleum' gases are pro- 
vided to cover the common use applicatibns, as' followsV - ■ 

3.1 .1 ^pymmSmal Propah^k %df6csLrfeti jproduct for u^ 
wliere high' volatility is^ r^qilired. ConmiercM''pr^^^^^ 
suit^bl^ for. ceitamlpw^se^^^ 

applications. , ,'v,-- ^ ■■■ ^ . ' ^ - ' T 

3.1.2 Commercial Butane — A hydrocarbon product for use 
,^ where low volatility is required. 

3.1.3 Commercial PB Mixtures — ^Mbctures of propane and 
butane for ,use where intermediate volatility is required. , 

, 3AAv^eciaIrDuty^PrQpme^-t^M^^^^ 
posed diiefly of propaneviwhich fe^^ 
cKM^tenstie^' wh^'^sed I^^ 

fiiei. , . , ... ., . , ., ■'■;'";' '' ■''■^'\^l ,.„ 

4. Detail Requirements .. ,,, . ; ^ v r; 

4.1 The four types of hquefied petroleum gases shall con- 
for^ tx>:tM i;^ f)rescribed to Table 1 . 

tional Analysis? 

5. Sampling 

D2713 Test Methdd^foi^^Dryiiess of Propane (Valve^Free^^ 
Method)^' --;/"■ - -^^' '^ u.^;, ■;:>;; ^ypv- . .if. b • ii.v ;k.; \; v; -^'"tajot ;if the =fe^ ' are to'^ be signifiGarit.^'^ Obtain samples for 

.n- ; ■^5j^*j5|j^Q]^^][^ ^^^^^^ D3700. 

Samples for other required tests should be obtained in accor- 

^This specification is under the jurisdiction of ASTM Corrimittee D-2"on 
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee 
D02.H on Liquefied Petroleum Gas. 

Current edition approved Nov. 10, 1997. Published June 1998. Originally 
published as D1835 - 61 T. Last previous edition D1835-91. 

^Annual Book of ASTM Standards, Vol 05.01. 

^ Annual Book of ASTM Standards, Vol 05.02. 

dance with Practice D 1265. 

"^ Available from Gas Processors Assn., 6526 E. 60th St., Tulsa, OK. 74145. 



TABLE 1 Detail Requirements for Liquefied Petroleum Gases 

Product Designation 





ASTM Test Methods 



PB Mixtures 


(see Section 2) 

Vapor pressure at lOCF {37.8°C), max, psig 





D 1267 or 





D 2598^ 

Volatile residue: 

evaporated temperature, 95 %, max, °F 












butane and heavier, max, vol % 




pentane and heavier, max, vol % 




Propylene content, max, vol % 



Residual matter: 

residue on evaporation 100 mL, max, mL 






oil stain observation 






Relative density at 60/ 




D 1657 or 

60°F(1 5.6/1 5.6°C) 

D 2598 

Corrosion, copper, strip 

No. 1 

No. 1 

No. 1 

No. 1 

D 1838^ 

Sulfur, ppmw 





D 2784 

Hydrogen sulfide 





D 2420 

Moisture content 




Free water content 



^Equivalent to Propane HD-5 of GPA Standard 2140. 

( Qo PR mivfriroc m 

net nni OYnopri POfl 

oRin M4.'^n kPa^ and ad 

ditionallv must not 

exceed that calculated from 

the following relationship between the observed vapor pressure and the observed relative density: 

Vapor pressure, max = 1167 - 1880 (relative density 60/60°F) or1167 - 1880 (density at 15°C) 

A specific mixture shall be designated by the vapor pressure at 1 00°F in pounds per square inch gage. To comply with the designation, the vapor pressure of the mixture 
shall be within + to - 10 psi of the vapor pressure specified. 

^In case of dispute about the vapor pressure of a product, the value actually determined by Test Method D 1267 shall prevail over the value calculated by Practice 

D 2598. 

°An acceptable product shall not yield a persistent oil ring when 0.3 mL of solvent residue mixture is added to a filter pap&r, in 0.1 -mL increments and examined in daylight 
after 2 min as described in Test Method D 2158. , 

^Although not a specific requirement, the relative density must be determined for other purposes and should be reported. Additionally, the relative density of PB mixture 
is needed to establish the permissible maximum vapor pressure (see Footnote B). 

''This method may not accurately determine the presence of reactive materials (for example, H2S, S°) in liquefied petroleum gas if the product contains corrosion 
inhibitors or other chemicals which diminish the reaction with the copper strip. ' 

^he total sulfur limits in these specifications do /nc/uqfe sulfur compounds used for stenching purposes. 

^he presence or absence of water shall be determined by visual inspection of the samples on which the relative density is determined. 

6. Keywords 

•6.1 butane; liquefied petroleum (LP) gases specifications; 


(Nonmandatory Information) 

Xl.l General 

XL 1.1 Liquefied petroleum gas products are composed of 
those readily liquefiable hydrocarbon compounds which are 
produced in the course of processing natural gas and also in the 
course of the conventional refining of crude oil. The 
composition of liquefied gases can vary widely depending 
upon the source and the nature of the treatment to which the 
products have been subjected. 

Xl.1.2 There are many uses for liquefied petroleum gases. 
Important uses are, (/) as domestic, commercial, and industrial 
fiiels, (2) as a carbon source material m metal treating 
operations, (3) as refinery raw materials for synthetic gasoline 
production, and (4) as petrochemical raw materials. The nature 

of the needs dictates the required composition characteristics in 
these various applications. Since the last three uses of those 
listed are in the category of specialty applications which 
involve special requirements, they are excluded . from 
consideration in the specifications. 

XL 1.3 In substance, the ASTM Specifications for Liquefied 
Petroleum Gases are designed to properly define acceptable 
products for domestic, commercial, and industrial uses. In 
many cases it will be found that products meeting the 
specifications will also be usable in applications other than the 
ones for which they were designed. The folloy/ing can be 
accepted as a general guide in the more common use 
applications of the three types of fuels: 

XLl.3.1 Commercial Propane— This fiiel type is adequate 



for domestic, commercial, and industrial use^ paitiettiaflj^^in'^^ 
geograpMcal areas and in seasons- where low ambient 
temperatures are conunon;Land where uniformity; of fuel is an. r 
iiriportant ccmSifeation,^ Suitable for; 

certain low'Seyerity internal combustion engine applications. ^ 

XL 1.3. 2 Commercial PB Mixtures — ^This fuel type, since It" 
covers a broad range of mixtures, permits the tailoring of fuels, 
to specific iieeds. The various mixtures find application a& 
domestic, commercial, and industrial fuel in areas and at times 
when low ambient temperature conditions are less frequently 

XI. 1.3.3 Commercial Butane — This fuel type finds limited , 
application as a domestic fuel in; areas of warmer climates. It is 
similarly used in industrial applications where problems of fuel 
vaporization are not present. 

Xl.1.3.4 Special-Duty Propane — ^This fuel type is a special . 
liquefied petrbleum gas product tailored to meet the restrictive 
needs of internal combustion engines operating imder moderate 
to high engine severity. Fuel prodticts Of this type will beiess' 
variable in composition iand ^combustion characteristics than . 
the other products covered by this specifi9ation. 

X1.2 Signiifiicarice aiidi Uise 

X1.2d TWs speeifie^idii -addreises cc^omiefeial liquefied 
petrpleuiu gases, consisting either propane or butane or . 
mixtures thereof Consequently, the important characteristics 
of these products danbe U^Med and controlled by a relatively -^ 
few smple, measurements.. The specification test methpds 
provided achieve the desired results, the significance of tiie 
various tests as they can apply to consumer problems "is 
summarized here.' ^ v - '^ : '.. 

XI .2. 1 . 1 Vapor Pressure, Volatility, and Relative Density: 
(a) Vapor Pressure is an indirect measure of the most 
extreme low-temperature conditions under which initial 
vaporization can be expected to take place. It can be considered 
as a semiquantitative measure of the amount of the most 
volatile material present in the product. It can also be used as 
a means for predicting the maxunum pressures which may be 
experienced at fuel tank temperatures. Vapor pressure becomes 
more significant when it is related to volatility. 

(p) Volatility^ expressed in terms of the 95 % evaporated 
temperature of the product, is a measure of the amount of least 
volatile fuel component present in the product. Coupled with a 
vapor pressure Imiit,' it serves to assure essentially siiigle- ' 
component products in the cases of commercial propane and 
c6inmeMd1bd:ane fU types, \^^en volatiiityl^'cbupiyd Witii 
a' v^of jpr^sure liinit wfiich lias Ibefeh rela?£et to ^mVft}^ , as^iii 
the casb'of the 'comme^^^ PB-niixture type of fii^ls^' Hife 
c6mbin&6ii serves to'assufe essentially two component 
mixtures for such fuels. WHfeh'cbupled with^ pirbper Vapbr 
presssure liinit, this nieasurem^ht serves id assure that special- 
duty pfopanejpixifduG^s'^TO cMefiy;6f propane and 
propyl^e ariS that projparie; will be? theihajor^ constituent; '^ ' ^ 
'(c) ^iG&ve pensily, by| itself)' has httle significance. It 
bfeco^mes^ctf^'v^ti^ only i)vlito related' t^^^ Va{)6f pressure and 
volatility. Sinde^ relafive density is of impbrtahce m ^ineetitig 
traiisportaticn ariH storage requirements itis always deteriniixed 

for all liqiiMed;|^etrolemn gas products. 

.XI -2. 1.2 Other Product Characteristics — ^While the 
Vaporization atid combustion characteristics of commercial 
liquefied gas products are completely defined for the normal 
use applications by vapor pressure, volatility, aiidM^^^ 
density, as given inXl.2.1.1, there are other items .which either 
affect or might affect the results^ obtained in some specific use 
applicatidris. For that reason, limits are specified for residue 
content, copper corrosion, sulfur content, moisture contenti and 
free water content to provide assurance of product 
dependability under the more extreme' cohdhioiis of use, , 

(a) Residue is a measilre of the concentration of soluble 
hydrocarbon materials present in the |)rbduct which are 
substantially less volatile than the liquefied pelxoleum gas 
product being sampled. Control of residue content is" of 
importance in apphcations where the fuel is used iii liquid or 
vapor feedsystems (where fuel vapors are withdrawn from the 
.top of theLPG storage container). In either case,. failureMlihiit 
the pemiissible concentration of residue ^niaterials maiy result in 
troubiespnie deposits „ or regulating eq^ipraerit may become 
fouled, or both i / - > 

(b) Copper ' Corrosion limits are for the, purpose, of 
prGviding assurance that difS-Culties will not be experienced in 
the deterioration of the copper, and copper-alloy fittings and 
connections which are commonly; used in ^many^l^ of 
utilization, storage, and transportation equipment. The copper 
cpiTOsioh test will dert^ct the presence of hydrogen sulfide, 
which i§ highly, t0xiQ.Tiie copper oorrosionlin^ 
asstirahCe' that the LP-Gas will not contain H2S in such 
quantifies 'as to present a health and safety hazard if it is kribwn 
that the product does not contain corrosion inhibitors or other 
chemicals which diminish the reaction with the copper strip. In 
addition. Test Method D 2420 is recommended as a field test 
and-' added safepard td ensure that LP-Gas dbes not contain 
detectable amounts of hydrogen sulfide. n r 

(c) Sulfur Content Ikmts are provided to more completely 
define liquefied petroleum gas products because these products 
are generally lower in sulfur content than most other 
petroleum-derived fuels. The limit on sulfur content minimizes 
sulfur oxide emissions and limits potential corrosion by 
exhaust gases from combustion of LPG. 

(d) Mois film Content' is a measure j of the approximate 
percentage saturation of the product with water. This 
measurement is a requirement only on the conunercial and 
special duty propane types of liqu^ petroleum gas. The 

pressure reducing; regulators am .siinilar' equipment 'will 

operate consistently without troul^Iesbmefr^^ 

the separation of dissolved water troin the product. 

(e) Free ^ Water Cpntent is of , importance only oh ^the 
commercial PB-mixtures ' and commercial butane .type 
products. These two types of products are normally used Imdef 
ambient cohditions whieli' are mild arid; as a coxisequence,^ the 
bhly retfuneihent is vigilance to' assure that no free wMr^i^ 
present ■;'; '"' - ■ /''■ ' ■"''■' "' ^'' ' ' ■ - ' ' y'-^^- 



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